Political philosophy & ethics

Kiyoharu Sakakibara

榊原 清玄

Doctoral researcher, Graduate School of Arts and Sciences, The University of Tokyo
JSPS Research Fellow (DC2)

Portrait of Kiyoharu Sakakibara

I study freedom, equality, work, and basic income, especially how political ideals take shape in institutions.

My research brings political philosophy into conversation with conceptual analysis and conceptual engineering. I also work on animal ethics and questions raised by AI for academic research.

Research

Freedom and basic income

My doctoral research examines substantive freedom and the normative case for basic income through liberal neutrality and equality.

Equality, work, and recognition

I examine relational inequality, social norms, recognition of work, and the concept of work itself.

Beyond human-centered institutions

My collaborative work addresses nonhuman animals, workplace democracy, and the place of AI in academic life.

Selected work

Japanese titles appear directly below the English titles. English titles follow the original where available; otherwise they are descriptive translations. Summaries are based on the articles.

8 works

Article · 2026 · ForthcomingWhat Should the Concept of Work Be? Conceptual Engineering of “Work” (in Japanese)労働概念は何であるべきか:〈労働〉の概念工学Kiyoharu SakakibaraNenpo Seijigaku (年報政治学), 2026–II · Forthcoming

Summary. This paper examines whether Tyssedal’s working definitions of work can be extended to the evaluation of good work. It distinguishes identifying what counts as work from assessing its quality, and identifies two overlooked semantic elements: workers’ attitudes toward their activities and their social and institutional status. Retaining Tyssedal’s account of the scope of work, it proposes additional evaluative conditions concerning opportunities for meaning or satisfaction, appropriate social conditions, adequate remuneration, and workloads that are not disproportionately excessive. The framework also offers a conceptual basis for debates on migrant worker admission. These conditions remain provisional; their precise standards and relative weights require further normative argument.

Article · 2026Emergent Social Inequality and Relational Egalitarianism: The Tension between Individual Choices and Social Norms (in Japanese)創発的社会不平等と関係論的平等主義:個人の選択と社会規範の緊張関係Kiyoharu SakakibaraHo to Tetsugaku (法と哲学), 12, 235–263

Summary. This paper identifies an emergence problem within relational egalitarianism: individually free choices can unintentionally generate dominating social norms, while intervention against those norms can itself restrict freedom of choice. It argues that existing liberal and fair relational egalitarian approaches do not adequately resolve this tension. Justificatory Relational Egalitarianism shifts attention to whether institutions and social norms can be justified as equally respecting everyone’s status as an autonomous agent. Freedom of choice and freedom as social standing are treated as adjustable means to securing that status. The paper proposes three responses: securing meaningful options to depart from prevailing norms, institutionally expressing respect, and cultivating an egalitarian ethos. These provide normative guidance rather than a complete elimination of emergent inequality or an empirical demonstration of policy effectiveness.

Article · 2026Rethinking the Recognition of Work and Labor: Relational Egalitarianism, Work Choices for Self-Realization, and Basic Income (in Japanese)労働の承認を問い直す——関係論的平等主義、自己実現に向けた労働選択、ベーシック・インカムTakafumi Abe and Kiyoharu SakakibaraThe Japanese Journal of Political Thought (政治思想研究), 26, 223–255

Summary. This paper distinguishes backward-looking recognition of work already performed from forward-looking recognition of individuals’ choices of work for self-realization. Within a relational egalitarian framework, it argues that forward-looking recognition must be secured before evaluating past achievements. It identifies three institutional aims: meaningful access to work choices, affirmation of those choices through the messages institutions express, and support for practices of mutual recognition. Basic income is defended as an institutional basis for these aims, securing resources independently of work and helping challenge practices that devalue particular work choices.

Article · 2024A Defense of Unconditional and Uniform Basic Income: From the Perspective of Equal Respect (in Japanese)無条件かつ一律給付のベーシック・インカムの擁護:平等な尊重の観点からTakafumi Abe and Kiyoharu SakakibaraSociety and Ethics (社会と倫理), 39, 81–93

Summary. This paper defends unconditional and uniform basic income as a distributive principle grounded in equal respect for moral agents. It argues that such respect requires both a diverse range of options and the protection of self-respect. An adequate income without work requirements supports choices directed toward self-realization, while uniform payments avoid eligibility assessments that can undermine self-respect. The paper addresses objections concerning free riding and demands to vary payments according to ability, income, or circumstances. Its focus is the normative desirability of basic income within ideal theory.

Review essay · 2026What Should Justice at Work Aim For: Substance or Procedure? (in Japanese)仕事の正義は何を目指すべきか――実体か、それとも手続きかKiyoharu SakakibaraSokan Shakai Kagaku (相関社会科学), 35, 9–14

Review of Shin Osawa, Shigoto no Seigi (2025).

Review essay · 2024Is Forward-Looking Responsibility Enough to Motivate? (in Japanese)動機づけをするためには前向き責任だけで十分か?――日本における自己責任論を中心に――Kiyoharu SakakibaraSokan Shakai Kagaku (相関社会科学), 33, 61–66

Review of Shintaro Tamate, Koshu Eisei no Rinrigaku (2022).

Book translation · 2026The Inheritance of Wealth: Justice, Equality, and the Right to Bequeath (in Japanese)財産を相続するということ——遺贈と正義の政治哲学Daniel Halliday · Japanese co-translation, Chapter 7Keiso Shobo (勁草書房), 2026

Japanese edition: Keiso Shobo, 2026. Chapter 7 translated by Kiyoharu Sakakibara.

Book translation · 2025The Ethics of Voting (in Japanese)投票の倫理学——ちゃんと投票するってどういうこと?(上・下)Jason Brennan · Japanese co-translation, two volumesKeiso Shobo (勁草書房), 2025

Japanese edition: Keiso Shobo, 2025. Kiyoharu Sakakibara is one of the translators.

Selected talks

15 January 2027 · Scheduled

Beyond Liberty-Based Arguments for Basic Income: Status, Respect, and the Form of Income Security

The 9th Workshop für Politische Philosophie, LMU Munich.

18 September 2026

Reconstructing Capability as Freedom: Substantiality, Trivalence, and the Ideal Distribution Criterion

24th Pavia Graduate Conference in Political Philosophy.

2026

Workplace Democracy for Non-human Animals

With M. Takeshita · IVRJ International Conference.

2025

Who Gets to Be Heard? Linguistic Inequality and Educational Evaluation in Multilingual Settings

PhD Workshop, Culture and Linguistic Diversity in Education in the UK and Japan Conference.

Teaching

Selected university teaching appointments and courses.

Introduction to Political ScienceThe Open University of Japan, Tokyo Adachi Study Center · Part-time Lecturer, 2026–present
Basic Communication I & II; Basic Academic English IIKogakuin University · Part-time Lecturer, 2025–2026

Background

Research appointments

  • 2026–present
    Research Fellow (DC2)Japan Society for the Promotion of Science
  • 2025–2026
    Part-time ResearcherUniversity of Tsukuba
  • 2022–2024
    Research AssistantThe University of Tokyo

Education

  • Current
    Doctoral studiesGraduate School of Arts and Sciences, The University of Tokyo
  • 2020–2022
    Graduate studies in lawGraduate School of Law, The University of Kitakyushu
  • 2015–2019
    Comparative CultureFaculty of Humanities, The University of Kitakyushu

Contact

ne8c89bfd7xnvek@gmail.com

Graduate School of Arts and Sciences
The University of Tokyo, Japan

Full academic record on researchmap